The `| tee` invocation always masked the return value of the switch-to-configuration test. ``` ~ $ false | tee && echo "oh no" oh no ``` The added wrapper script will still output everything to stderr, while passing failures to the test harness.
		
			
				
	
	
		
			35 lines
		
	
	
		
			992 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			35 lines
		
	
	
		
			992 B
		
	
	
	
		
			Nix
		
	
	
	
	
	
# Test configuration switching.
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import ./make-test.nix ({ pkgs, ...} : {
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  name = "switch-test";
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  meta = with pkgs.stdenv.lib.maintainers; {
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    maintainers = [ gleber ];
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  };
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  nodes = {
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    machine = { ... }: {
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      users.mutableUsers = false;
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    };
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    other = { ... }: {
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      users.mutableUsers = true;
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    };
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  };
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  testScript = {nodes, ...}: let
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    originalSystem = nodes.machine.config.system.build.toplevel;
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    otherSystem = nodes.other.config.system.build.toplevel;
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    # Ensures failures pass through using pipefail, otherwise failing to
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    # switch-to-configuration is hidden by the success of `tee`.
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    stderrRunner = pkgs.writeScript "stderr-runner" ''
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      #! ${pkgs.stdenv.shell}
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      set -e
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      set -o pipefail
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      exec env -i "$@" | tee /dev/stderr
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    '';
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  in ''
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    $machine->succeed("${stderrRunner} ${originalSystem}/bin/switch-to-configuration test");
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    $machine->succeed("${stderrRunner} ${otherSystem}/bin/switch-to-configuration test");
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  '';
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})
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